Wrench.



PATENTED DEG. 10,1907.

c. AHERN.

WRENCH. APPLICATION FILED JUNE 7,1907.

WITNESSES Allomeys UNITED STATES PATENT OFFICE.

CORNELIUS AHERN, OF ALLEGHENY, PENNSYLVANIA.

WRENCH.

To all whom it may concern:

Be it known that I, OoRNELIUs AHERN, a citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Wrenches, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in wrenches of that type commonly styled monkey wrenches.

The invention has for its object to provide a quick acting-wrench, wherein positive and reliable means are employed forholding a jaw in the position to which it is adjusted.

Another object of this invention is to provide a strong, durable and inexpensive wrench free from danger of injury by ordinary use.

To this end, I have devised a wrench consisting of a shank having threaded edges, a fixed jaw and a handle. Upon the shank is a movable jaw having a revoluble collar provided with interior threads adapted to engage the threads of said. shank. I provide novel means for limiting the movement of the collar, for determining when the movable jaw can be adjusted.

The detailed construction entering into my invention will be presently described and then specifically pointed out in the appended claims.

In the drawings, Figure l is an elevation of a wrench constructed in accordance with my invention. Fig. 2 is a vertical sectional view of a portion of the wrench. Fig. 3 is a horizontal sectional view of a wrench taken on the line w-ac of Fi 2, and Fig. 4 is a similar view taken on the line y y of Fig. 2. Fig. 5 is a transverse section of the sleeve.

To put my invention into practice, I construct the wrench of a shank 1 having a fixed jaw 2 and a detachable handle 3. The shank 1 is substantially rectangular in cross section, and is provided with diametrically opposed curved threaded edges 4, the threads of said ed es being at a slight pitch or inclination.

lidably mounted upon the shank 1 is a movable jaw 5 having an opening 6 to receive the shank 1. The jaw 5 is provided with a depending sleeve 7 alining with the o ening 6, said sleeve having a transverse s 0t formed therein, as at 8, the object of which will presently appear. The sleeve is Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed June '7. 1907. Serial No. 377.699.

also provided with a peripheral flange 9 at its lower end.

Fitting upon the sleeve 7 is a sectional collar 10, the sections of said collar being clamped together, as at 1.1. Each section of the collar is provided with interiorly arranged segment shaped teeth 12, adapted to loosely fit around the sleeve 7, when the movable jaw is unlocked, and engage the threads 4 of the shank 1, when the jaw is in a locked position, as illustrated in Figs. 1 and 2 of the drawings.

To limit the movement of the collar 10 upon the flange 9 of the sleeve 7, I provide theupper edge of the collar with two diametrically opposed lugs 14 adapted to impinge the sides of the movable jaw 5 and determine the locked and unlocked position of the collar 10. The collar 10 is provided with a depending spring 15 adapted to frictionally engage the periphery of the flange 9 of the sleeve 7, and prevent the collar from accidentally rotating and unlocking or looking the movable jaw 5.

The shank 1 of. the wrench is graduated, as at 16, whereby the movable jaw can be adjusted any desired distance upon the shank 1, with relation to the fixed jaw 2.

It is thought that the construction and operation of my wrench will be fully understood without further description, and it is obvious that such changes in the size, proportion, minor details of construction, as are permissible by the appended claims, can be resorted to, without departing from the spirit and scope of the invention.

Having fully described my invention, what I claim and desire to secure by Letters Patent is:

1. A wrench embodying a graduated shank having diametrically opposed threaded edges, a fixed jaw carried by one end of said shank, a handle detachably mounted upon the opposite end of said shank, a jaw slightly mounted upon said shank and having a depending flanged sleeve provided witha slot, a sectional collar loosely clamped upon said sleeve, interiorly arranged teeth carried by said collar and adapted to engage the threaded edges of said shank, lugs carried by said collar for engagin said jaw and limiting the movement of sai collar, and a spring carried by said collar and frictionally engaging said flanged sleeve, substantially as described.

2. A wrench embodying a graduated shank having threaded edges, a fixed jaw carried by one end of said shank, a movable jaw mounted upon said shank and having a depending slotted sleeve, a sectional collar loosely clamped upon said. sleeve and. having interior teeth for engaging the threaded. edges of said shank, means carried by the upper edge of said collar for limiting its rotation, and means carried by said collar and frictionally engaging said sleeve for preventing accidental rotation of said collar.

3. In a wrench, the combination with a shank having threaded edges, a fixed jaw and a detachable handle, of a movable jaw mounted upon said shank and having a depending slotted sleeve, a sectional cellar loosely clamped upon said sleeve and having teeth for engaging the threaded edges of said shank, lugs carried by said collar for limiting its rotation, and means carried by said ('01- lar for frictionally holding the same sta tionary.

In testimony whereof I aliix my signature in the presence of two witnesses.

CORNELIUS A'IIlC RN.

itnesses VVILLIAM lVI-IITE, MAX H. SRoLovi'rz. 

